Annual Summary 



Annual, 19H1 



Normal 



Extremes 



Barometer 



(Readings reduced to sea level) 



Maximum 30.69, Nov. 20 



Minimum 28.96, Jan. 6 



Mean semi-daily 29.963 



Range 1.73 



Air Xempcrature 



Highest 96, Aug. 7 



Lowest -11, Feb. 3 



Mean 49.4 



Range 107 



Highest mean daily 83, July 29 



Lowest mean daily 7, Feb..l 



Mean maximum 59.3 



Mean minimum 39.3 



Greatest daily range 42, Apr. 20,21; May 6 

 Least daily range ... 4, Feb. 18; May 14; 

 Nov. 20, Dec. 4th 



Precipitation 



Precipitation. In inches 45.18 



Snow, in inches 44.00 



Maximum precipitation 24 hrs. 3.51, 



Aug. 27 and 28. 

 Number of days on which .01 or more 



inches of rain fell 134 



Wind (miles) 



Total movement 49,882 



Greatest daily movement . .391, Apr. 27 



Least daily movement 177, Aug. 24 



Mean hourly velocity 



Maximum velocity for 5 min. 40, Dec. 7 



(coi rected to conform to 8 cup anemometer) 



Wind (direction) 



Prevailing direction nw 



North, days 50 



Northeast, days 5 



East, days 5 



Southeast, days 64 



South, days 55 



Southwest, days 25 



West, days 40 



Northwest, days 121 



Weather 



Mean relative humidity, per cent . . 67.6 



Mean cloudiness, per cent 57 



Number of clear days 126 



Number of fair days 100 



Number of cloudy days 139 



Number of hours bright sunshine2152.9 

 Percent of possible hours of bright 



sunshine 48.3 



Last Frosts May 4th 



First Frost Oct. 10th 



Last snow April 8th 



First snow Nov. 27 



30.81 



28.95 



30.016 



1.86 



95.8 

 -12.1 



47.2 

 108.0 



57.8 

 36.5 



43.49 

 48.38 



123 

 52,321 



6.0 

 35 



75.8 

 50.8 

 109 

 128 

 128 

 2,356 



53 



:M'yl2 



S't 19 



Aprl4 



Nov 5 



31.05, 1920 

 28.47, 1914 



2.33, 1913; 1.55, 1923 



104, 1911 



-26.0, 1904 



49.6, 1913; 44.0, 1904 



57.05, 1897; 30.68, 1908 

 78.00, 1920; 24.50, 1919 



144, 1902; 96, 1924 

 63,571, 1908; 36,257, 1894 



42, 1912 



82.9, 1927; 66.8, 1891 



60, '98, '01, '02; 41, '08, '24 



145, 1891; 59, 1927 



182. 1912; 83, 1894 



179, '01, '02; 71, 1910 



2,838, 1924; 1864, 1902 



Apr. 23, 1904 ; June 3, 1908 

 Aug. 22, '94, '95; Oct. 13, '09 

 Mar. 14, '10; May 5, '91, '17 

 Oct. 10, '25; Nov. 26, '91 



Note— The first colnum in tlie above summary gives observations made during the 

 year. The second and tliird columns trive the averaijes and extremes observed from 

 1»8U to 1929. 



450-1932-4098 



